pieplot3d.html

jfreechart最新源代码

<FONT color="green">137</FONT>    <a name="line.137"></a>
<FONT color="green">138</FONT>        /**<a name="line.138"></a>
<FONT color="green">139</FONT>         * Sets the pie depth as a percentage of the height of the plot area.<a name="line.139"></a>
<FONT color="green">140</FONT>         *<a name="line.140"></a>
<FONT color="green">141</FONT>         * @param factor  the depth factor (for example, 0.20 is twenty percent).<a name="line.141"></a>
<FONT color="green">142</FONT>         */<a name="line.142"></a>
<FONT color="green">143</FONT>        public void setDepthFactor(double factor) {<a name="line.143"></a>
<FONT color="green">144</FONT>            this.depthFactor = factor;<a name="line.144"></a>
<FONT color="green">145</FONT>        }<a name="line.145"></a>
<FONT color="green">146</FONT>    <a name="line.146"></a>
<FONT color="green">147</FONT>        /**<a name="line.147"></a>
<FONT color="green">148</FONT>         * The depth factor for the chart.<a name="line.148"></a>
<FONT color="green">149</FONT>         *<a name="line.149"></a>
<FONT color="green">150</FONT>         * @return The depth factor.<a name="line.150"></a>
<FONT color="green">151</FONT>         */<a name="line.151"></a>
<FONT color="green">152</FONT>        public double getDepthFactor () {<a name="line.152"></a>
<FONT color="green">153</FONT>            return this.depthFactor;<a name="line.153"></a>
<FONT color="green">154</FONT>        }<a name="line.154"></a>
<FONT color="green">155</FONT>    <a name="line.155"></a>
<FONT color="green">156</FONT>        /**<a name="line.156"></a>
<FONT color="green">157</FONT>         * Draws the plot on a Java 2D graphics device (such as the screen or a <a name="line.157"></a>
<FONT color="green">158</FONT>         * printer).  This method is called by the <a name="line.158"></a>
<FONT color="green">159</FONT>         * {@link org.jfree.chart.JFreeChart} class, you don't normally need <a name="line.159"></a>
<FONT color="green">160</FONT>         * to call it yourself.<a name="line.160"></a>
<FONT color="green">161</FONT>         *<a name="line.161"></a>
<FONT color="green">162</FONT>         * @param g2  the graphics device.<a name="line.162"></a>
<FONT color="green">163</FONT>         * @param plotArea  the area within which the plot should be drawn.<a name="line.163"></a>
<FONT color="green">164</FONT>         * @param anchor  the anchor point.<a name="line.164"></a>
<FONT color="green">165</FONT>         * @param parentState  the state from the parent plot, if there is one.<a name="line.165"></a>
<FONT color="green">166</FONT>         * @param info  collects info about the drawing <a name="line.166"></a>
<FONT color="green">167</FONT>         *              (&lt;code&gt;null&lt;/code&gt; permitted).<a name="line.167"></a>
<FONT color="green">168</FONT>         */<a name="line.168"></a>
<FONT color="green">169</FONT>        public void draw(Graphics2D g2, Rectangle2D plotArea, Point2D anchor,<a name="line.169"></a>
<FONT color="green">170</FONT>                         PlotState parentState,<a name="line.170"></a>
<FONT color="green">171</FONT>                         PlotRenderingInfo info) {<a name="line.171"></a>
<FONT color="green">172</FONT>    <a name="line.172"></a>
<FONT color="green">173</FONT>            // adjust for insets...<a name="line.173"></a>
<FONT color="green">174</FONT>            RectangleInsets insets = getInsets();<a name="line.174"></a>
<FONT color="green">175</FONT>            insets.trim(plotArea);<a name="line.175"></a>
<FONT color="green">176</FONT>    <a name="line.176"></a>
<FONT color="green">177</FONT>            Rectangle2D originalPlotArea = (Rectangle2D) plotArea.clone();<a name="line.177"></a>
<FONT color="green">178</FONT>            if (info != null) {<a name="line.178"></a>
<FONT color="green">179</FONT>                info.setPlotArea(plotArea);<a name="line.179"></a>
<FONT color="green">180</FONT>                info.setDataArea(plotArea);<a name="line.180"></a>
<FONT color="green">181</FONT>            }<a name="line.181"></a>
<FONT color="green">182</FONT>    <a name="line.182"></a>
<FONT color="green">183</FONT>            Shape savedClip = g2.getClip();<a name="line.183"></a>
<FONT color="green">184</FONT>            g2.clip(plotArea);<a name="line.184"></a>
<FONT color="green">185</FONT>    <a name="line.185"></a>
<FONT color="green">186</FONT>            // adjust the plot area by the interior spacing value<a name="line.186"></a>
<FONT color="green">187</FONT>            double gapPercent = getInteriorGap();<a name="line.187"></a>
<FONT color="green">188</FONT>            double labelPercent = 0.0;<a name="line.188"></a>
<FONT color="green">189</FONT>            if (getLabelGenerator() != null) {<a name="line.189"></a>
<FONT color="green">190</FONT>                labelPercent = getLabelGap() + getMaximumLabelWidth() <a name="line.190"></a>
<FONT color="green">191</FONT>                               + getLabelLinkMargin();   <a name="line.191"></a>
<FONT color="green">192</FONT>            }<a name="line.192"></a>
<FONT color="green">193</FONT>            double gapHorizontal = plotArea.getWidth() <a name="line.193"></a>
<FONT color="green">194</FONT>                                   * (gapPercent + labelPercent);<a name="line.194"></a>
<FONT color="green">195</FONT>            double gapVertical = plotArea.getHeight() * gapPercent;<a name="line.195"></a>
<FONT color="green">196</FONT>    <a name="line.196"></a>
<FONT color="green">197</FONT>            double linkX = plotArea.getX() + gapHorizontal / 2;<a name="line.197"></a>
<FONT color="green">198</FONT>            double linkY = plotArea.getY() + gapVertical / 2;<a name="line.198"></a>
<FONT color="green">199</FONT>            double linkW = plotArea.getWidth() - gapHorizontal;<a name="line.199"></a>
<FONT color="green">200</FONT>            double linkH = plotArea.getHeight() - gapVertical;<a name="line.200"></a>
<FONT color="green">201</FONT>            <a name="line.201"></a>
<FONT color="green">202</FONT>            // make the link area a square if the pie chart is to be circular...<a name="line.202"></a>
<FONT color="green">203</FONT>            if (isCircular()) { // is circular?<a name="line.203"></a>
<FONT color="green">204</FONT>                double min = Math.min(linkW, linkH) / 2;<a name="line.204"></a>
<FONT color="green">205</FONT>                linkX = (linkX + linkX + linkW) / 2 - min;<a name="line.205"></a>
<FONT color="green">206</FONT>                linkY = (linkY + linkY + linkH) / 2 - min;<a name="line.206"></a>
<FONT color="green">207</FONT>                linkW = 2 * min;<a name="line.207"></a>
<FONT color="green">208</FONT>                linkH = 2 * min;<a name="line.208"></a>
<FONT color="green">209</FONT>            }<a name="line.209"></a>
<FONT color="green">210</FONT>            <a name="line.210"></a>
<FONT color="green">211</FONT>            PiePlotState state = initialise(g2, plotArea, this, null, info);<a name="line.211"></a>
<FONT color="green">212</FONT>            // the explode area defines the max circle/ellipse for the exploded pie <a name="line.212"></a>
<FONT color="green">213</FONT>            // sections.<a name="line.213"></a>
<FONT color="green">214</FONT>            // it is defined by shrinking the linkArea by the linkMargin factor.<a name="line.214"></a>
<FONT color="green">215</FONT>            double hh = linkW * getLabelLinkMargin();<a name="line.215"></a>
<FONT color="green">216</FONT>            double vv = linkH * getLabelLinkMargin();<a name="line.216"></a>
<FONT color="green">217</FONT>            Rectangle2D explodeArea = new Rectangle2D.Double(<a name="line.217"></a>
<FONT color="green">218</FONT>                linkX + hh / 2.0, linkY + vv / 2.0, linkW - hh, linkH - vv<a name="line.218"></a>
<FONT color="green">219</FONT>            );<a name="line.219"></a>
<FONT color="green">220</FONT>           <a name="line.220"></a>
<FONT color="green">221</FONT>            state.setExplodedPieArea(explodeArea);<a name="line.221"></a>
<FONT color="green">222</FONT>            <a name="line.222"></a>
<FONT color="green">223</FONT>            // the pie area defines the circle/ellipse for regular pie sections.<a name="line.223"></a>
<FONT color="green">224</FONT>            // it is defined by shrinking the explodeArea by the explodeMargin <a name="line.224"></a>
<FONT color="green">225</FONT>            // factor. <a name="line.225"></a>
<FONT color="green">226</FONT>            double maximumExplodePercent = getMaximumExplodePercent();<a name="line.226"></a>
<FONT color="green">227</FONT>            double percent = maximumExplodePercent / (1.0 + maximumExplodePercent);<a name="line.227"></a>
<FONT color="green">228</FONT>            <a name="line.228"></a>
<FONT color="green">229</FONT>            double h1 = explodeArea.getWidth() * percent;<a name="line.229"></a>
<FONT color="green">230</FONT>            double v1 = explodeArea.getHeight() * percent;<a name="line.230"></a>
<FONT color="green">231</FONT>            Rectangle2D pieArea = new Rectangle2D.Double(<a name="line.231"></a>
<FONT color="green">232</FONT>                explodeArea.getX() + h1 / 2.0, explodeArea.getY() + v1 / 2.0,<a name="line.232"></a>
<FONT color="green">233</FONT>                explodeArea.getWidth() - h1, explodeArea.getHeight() - v1<a name="line.233"></a>
<FONT color="green">234</FONT>            );<a name="line.234"></a>
<FONT color="green">235</FONT>    <a name="line.235"></a>
<FONT color="green">236</FONT>            int depth = (int) (pieArea.getHeight() * this.depthFactor);<a name="line.236"></a>
<FONT color="green">237</FONT>            // the link area defines the dog-leg point for the linking lines to <a name="line.237"></a>
<FONT color="green">238</FONT>            // the labels<a name="line.238"></a>
<FONT color="green">239</FONT>            Rectangle2D linkArea = new Rectangle2D.Double(<a name="line.239"></a>
<FONT color="green">240</FONT>                linkX, linkY, linkW, linkH - depth<a name="line.240"></a>
<FONT color="green">241</FONT>            );<a name="line.241"></a>
<FONT color="green">242</FONT>            state.setLinkArea(linkArea);   <a name="line.242"></a>
<FONT color="green">243</FONT>    <a name="line.243"></a>
<FONT color="green">244</FONT>            state.setPieArea(pieArea);<a name="line.244"></a>
<FONT color="green">245</FONT>            state.setPieCenterX(pieArea.getCenterX());<a name="line.245"></a>
<FONT color="green">246</FONT>            state.setPieCenterY(pieArea.getCenterY() - depth / 2.0);<a name="line.246"></a>
<FONT color="green">247</FONT>            state.setPieWRadius(pieArea.getWidth() / 2.0);<a name="line.247"></a>
<FONT color="green">248</FONT>            state.setPieHRadius((pieArea.getHeight() - depth) / 2.0);<a name="line.248"></a>
<FONT color="green">249</FONT>    <a name="line.249"></a>
<FONT color="green">250</FONT>            drawBackground(g2, plotArea);<a name="line.250"></a>
<FONT color="green">251</FONT>            // get the data source - return if null;<a name="line.251"></a>
<FONT color="green">252</FONT>            PieDataset dataset = getDataset();<a name="line.252"></a>
<FONT color="green">253</FONT>            if (DatasetUtilities.isEmptyOrNull(getDataset())) {<a name="line.253"></a>
<FONT color="green">254</FONT>                drawNoDataMessage(g2, plotArea);<a name="line.254"></a>
<FONT color="green">255</FONT>                g2.setClip(savedClip);<a name="line.255"></a>
<FONT color="green">256</FONT>                drawOutline(g2, plotArea);<a name="line.256"></a>
<FONT color="green">257</FONT>                return;<a name="line.257"></a>
<FONT color="green">258</FONT>            }<a name="line.258"></a>
<FONT color="green">259</FONT>    <a name="line.259"></a>
<FONT color="green">260</FONT>            // if too any elements<a name="line.260"></a>
<FONT color="green">261</FONT>            if (dataset.getKeys().size() &gt; plotArea.getWidth()) {<a name="line.261"></a>
<FONT color="green">262</FONT>                String text = "Too many elements";<a name="line.262"></a>
<FONT color="green">263</FONT>                Font sfont = new Font("dialog", Font.BOLD, 10);<a name="line.263"></a>
<FONT color="green">264</FONT>                g2.setFont(sfont);<a name="line.264"></a>
<FONT color="green">265</FONT>                FontMetrics fm = g2.getFontMetrics(sfont);<a name="line.265"></a>
<FONT color="green">266</FONT>                int stringWidth = fm.stringWidth(text);<a name="line.266"></a>
<FONT color="green">267</FONT>    <a name="line.267"></a>
<FONT color="green">268</FONT>                g2.drawString(<a name="line.268"></a>
<FONT color="green">269</FONT>                    text, <a name="line.269"></a>
<FONT color="green">270</FONT>                    (int) (plotArea.getX() + (plotArea.getWidth() - stringWidth) <a name="line.270"></a>
<FONT color="green">271</FONT>                            / 2),<a name="line.271"></a>
<FONT color="green">272</FONT>                    (int) (plotArea.getY() + (plotArea.getHeight() / 2))<a name="line.272"></a>
<FONT color="green">273</FONT>                );<a name="line.273"></a>
<FONT color="green">274</FONT>                return;<a name="line.274"></a>
<FONT color="green">275</FONT>            }<a name="line.275"></a>